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Question
Pick out the wrong statement.
Options:
A .  Strongly caking coal should not be used in the Lurgi gasifier
B .  Acetylene gas can not be used for illumination purpose
C .  Water gas is called blue gas because of the color of the flame, when it is burnt
D .  Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Answer: Option B

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